Question about a specific part

Any technical questions about the Epiphany chip and Parallella HW Platform.

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Question about a specific part

Postby baseballguy » Wed Jul 09, 2014 2:16 pm

Hi everyone,

I was wondering what purpose those 3 pins on the board serve,if any?

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Re: Question about a specific part

Postby 9600 » Wed Jul 09, 2014 3:11 pm

That header is connected to a UART.


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Re: Question about a specific part

Postby FHuettig » Wed Jul 09, 2014 3:12 pm

Those are the UART connections. When the board is booting you can monitor the process through those pins, if it does not boot you can do some debug and even reflash the board if needed, and once it boots you can use it as a terminal to access the board without any other peripherals or network connection. I've seen projects that use it to control external devices.

Be aware, though, that it is NOT an RS-232 compatible port as the signals are 0-3.3V rather than RS-232's bipolar standard of up to +/-15V. There are USB-UART adapters available that can connect directly to the unipolar signals on the Parallella.
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